Self-oiling die-stock.



PATENTED AUG. 11, 1908.

J. MUELLER. SELF OILING DIE STOCK.

APPLICATION FILED 00122; 1907'.

,nseful Improvements in Self-'Oiling Die;

oil feeding device between the handle and hereinafter and set forthwiththe claims appended hereto.

' respectively.

."tained in a 'lubr1cant.-'

. I w 3 and 4 are transverse sections on lines 3-3, I

:TOSEPI-I MUELLER, or sT. LOUIS, inssouni.

SELE-OILING DIE-STOCK.

Specification of Letters Patent. fi at ented v I r v I A i Applicationfiled October 22, 1907. Serial No. 398,647.

To all whom it may concern: a Be it'lrnown that .I,'- JosEPH MUELLER, al sarily, limited to a stock of'this t vp citizen of the, United States,residing at St. v i LOUIS, 1n the county of St. Louis, City and body ofthe stock which is providedwithtu- State of Missouri, have invented newand I i V I 4. swiveled the handles B of the stock The S'tOCl( S,OfWl1lCl1thefOllOWlIlgiSfiSPGClfiCfiillOll. handles B are tubular andextend intixlithe This invention relates to .die stocks, and i I I i ifmore particularly to devices fonoiling the work cut by the dies. i Theinvention has for one of its objects to improve and simplify theconstruction and operation of devices of this characterso as totie-comparatively easy and inexpensive to manufacture, reliable in use,and convenient of a. nut Z threaded oneach arm 1 and engag ing anannular flange 3 on the handle; The outer extremities of the handleshave filling openings 4 that are normally closed by screw plugs i5,whereby the lubricant is prevented. from flowing out as the die isturned. Each arm. 1 has an internal annular shoulder-or to manipulate. rA further object of the invention is the provisio'nof a die stock inwhich the handle or handles constitute reservoirs forlubricant. Anotherobject is the employment of an passes through a radial opening'Q in thesleeve 10 of the stock and terminates adja cent the dies'11 so as todischarge lubricant on the latter and work cut-thereby; The member 7 isfrictionally held in place in the arm 1, and extending outwardly isalcentral air inlet tube 12, Fig; 2,"whie h. projects into the handle B,and connected with the inner end of the handle is a valveC which isadaptbody of the: stock,which device is controlled by a rotary movementof the-handle' for opening the supply of, oil andc'utting it off. Theinvention has as a further object to provide a die stock having alubricant feed ing device controlled by a handle of the stock, thehandle beinglautomatically mainposition to prevent the flow of having acentral aperture 13 to receive the ,a-ir'in-let tube 12, and it isremovably con- VVith' these objects in view and others, as nected withthe handle by a screw thread l i. will appear as the descriptionproceeds, the invention comprises the various novel features ofconstruction and arrangement of parts which-will be more fully describedparticularity entirely through the sameand adapted to be brought intoregister with the oi l' feeding tube 8, and the valve has anotherangular port 16 that registerswith a port 17 in the In the accompanyingdrawing, which illust rates one of the e'mbodiments' of the in vention,Figure l is a central longitudinal section of the die'stocli with partsin elevation and equipped with the self-oiling'attachment. Fig. 2 is acentral longitudinal section of one of the ha ndles of the stock showingthe lubricant feeding device; Figs.-

. with an opening 13 ir'rtl'ie air inlet/tube]? so that air can enterthe ,liandleas liibrica'iitis fed therefrom, Norinallyfthehandle in sucha position thatthe flow of lubricant and held inthis positioirb ahelical torsion spring 19 that has its outer end cngaged in a slot 20in' the air inlet tube, and its innerend Fig. 4, showing the position ofthe oiling device in feeding position and closed'position, v

i the position shown in Fig. 4. For limit ng Similar referencecharacters are employed the angular movement of the handle the todesignate corresponding parts throughout valve has a peri iheral flangeQZ'which exthe several viewsi Y tends three quarter wayaroundthc'sa'meso In the present instance, I have elected to 1 illustrate theinvention in connection with a 1 stock commonly known in the,trade asthe duplex adjustable die stock but it i to bel.

walls 24 are adapted to engage with a pin fixed plug or member 7. I;

Aug. 1191908.

' Y 1 understood that the; inven tioiris ndt ncces' bular extensions orarms onfwliichjare arms 1 to which'they' are 'attachedby .in'ea'ns seat6, on which is seated a plug 7 which is provided with a short. pieceoftubeb that ed to contr'olthe flow of lubricant from the handle. Thisvalve is in the form of a disk The valve has a port or passage 15extending plug 7 when the port 15 registers' with' the tube 8, and atthe same time also registers entrance of airare cut oil, and thehandlois engaged in a recess 2l in the valve, the ten-" sion of thespring acting to hold the parts in as to leave a quadrantrecess 23 whoseend i Referring to the drawing,A designates the '110 25 extendingoutwardlyfrom the r'el i w t y In practice, the screw plugs 5 of thehandles are taken out and the handles filled one after the other withlubricant. Since the valve-closing springs 19 hold the handles so thatthe ports and 16 do not register respectively with the tubeS and port 17as shown in Fig. 4, no, lubricant will feed from the handles. When thestock is applied to a piece of work to be threaded, the dies and workcan be lubricated by merely turning one or bot-h handles so that theports will register, as shown in Fi 3, thereby permitting oil to passthrougi the ports 15 and tubes 8, while air enters through the ports 17,16 and 18, and tubes 12-. As soon as the handles are released, thesprings 19 will "return the handles to normal position and thereby cutoil theflow of oil and close communication between the atmosphere andhandles. It will thus be seen that the lubricating devices are easy andconvenientto operate and dispense with the need of the usual oil can,thereby saving time and permitting the cutting operation to becontinuous without stopping to apply lubricant.

From the foregoing description, taken in connection with theaccompanying drawing, the advantages of the construction andof themethod of operation will be readily apparent to those skilled in the artto which the invention appertains, and while I have .de

scribed the principle of operation of the invention, together with theapparatus which I now consider to bethe best embodiment thereof, Idesire to have it understood that the apparatus shown is merelyillustrative and that such changes may be made when desired as arewithin-the scope of the claims.

Having thus described theinvention, what I claim is 1. The combinationof adie stock having 'a tubular arm, a hollow handle fitted therein forrotary movement, said handle constituting a reservoir for lubricant, aduct leading from the handle to the socket of the die for lubricatingthe work, and a valve in the armarranged to be opened and closed by therotary movement of the handle. v

2. The combination of a die stock provided with a socket having a hollowarm, a ported. plugin the arm, a feed tube in the stock and extendingfrom the ort of the plug to the said socket, a rotata le handle on thearm and constituting a reservoir'for lubricant, a valve secured to thearm and arranged to be moved to open or closed position by the latter.for permitting lubricant to feed to the said tube.

3. The combination of a die stock provided with a tubular arm, a handlemounted thereon "for rotary movement and constituting a reservoir forlubricant, a fixed plug in thearm and having tubes extending one intothe mit the air to enter the handle through on; tube and lubricant tofeed from the handle to the other tube, and a spring operating on thehandle to hold the'valve in closed position.

4, The combination of a die stock comprising a body, and a handlerotatably mounted thereon and forming-a lubricantcontainingreservoir,'with a device arranged prising a body, a hollow handlerotatably mounted thereon and serving as a reservoir for lubricant,means for supplying lubricant fromthe handle to the dies of thestock,and a valve device secured to the inner end of the handle and arranged'and constructed to be opened and closed by the 'movement oi' -th elatter for controlling thes'upply of lubricant.

6. The combination of a die stock comprising a die carrying body, ahollow handle mounted thereon to turn and forming a lubricant-containingreservoir, means arranged between the stock and handle for supplyinglubricant fromthe latter to the dies, means for admitting air to thehandle, and a valve controlling bot-h means and movable with the handle.

7. The combination of a die stock coniprising a die carrying body, ahollow handle mounted thereon to turn and forming alubric-ant-containing reservoir, means between the stock and handle forsupplyinglubricant from the latter to' the dies, means for admitting airto the handle, a valve controlling both means and movable with thehandle, and a spring operating on the handlet'or holding the valvemclosed position.

8. The combination of'a die stock consisting of a body having a tubulararm, a hollow.

handle 'removably and rotatably mounted in the body of the stock forsupplying lubricanttoithe dies,-an air inlet't'ube on the memberextending into the handle, a valve removably connected with the innerend of thehandle and-providedwitli orts adapted to register with thesaid tubes or permitting air to enter the handle through,one tube andlubricant to flow to the dies through the other tube,

means forlimiting the rotary movement of the handle, 'and-a springarranged to automatically return the handle to normal posi-- tion forcutting ofi';the supply of lubricant to the dies.

In testimony whereof I aflix-iny signature in presence of two'witnessesJOSEPH MUELLER.

Witnesses: HERBERT S. GRIFFIN, AUGUST PAPE.

